[python] Re: another newcomer

  • From: dirk.bonne@xxxxxxx
  • To: python@xxxxxxxxxxxxx
  • Date: Wed, 24 Jan 2007 14:14:19 +0100

Henry Thomas wrote:
dirk.bonne@xxxxxxx wrote:
FYI: there has been documented measurements related to this. Check out
this pdf:

    http://www.ligfiets.net/redactie/meetligfietsengels.pdf

Dirk
Dirk, thanks for sharing this with us, it was a very interesting read. There isn't a lot of test data like this that I have found which is specifically dealing with recumbent.

I am a bit confused about the tires. As I read it, larger rims (26") and firmer rubber compounds are better at higher pressures (110psi). However I thought that the Specialized Fat Boy was softer than the Schwalbe Stelvio Kevlar, or is that not the case.


I read the opposite out of this paragraph and thus no contradiction. The supple rubber compounds are better. The stelvio material is stiffer and also has a worse performance.

What I think is interesting is that extreme height differences between seat / BB are not needed. From 15 -> 25cm is no much different in power. So you can just as well use 15cms (more ergonomic). note, the measurement was made for seat angle of 21degrees.

Dirk

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